How severe is CVE-2012-0454?

CVE-2012-0454 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2012-0454 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0454?

CVE-2012-0454 primarily affects Mozilla Firefox. In total, 140 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0454?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2012-0454 published?

CVE-2012-0454 was published on 2012-03-14 and last updated on 2026-06-16.

CVE-2012-0454

CVE-2012-0454 is a high-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Mozilla Firefox
Published: 2012-03-14
Last modified: 2026-06-16

Description

Use-after-free vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 on 32-bit Windows 7 platforms allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors involving use of the file-open dialog in a child window, related to the IUnknown_QueryService function in the Windows shlwapi.dll library.

Frequently asked questions

What is CVE-2012-0454?: Use-after-free vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 on 32-bit Windows 7 platforms allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors involving use of the file-open dialog in a child window, related to the IUnknown_QueryService function in the Windows shlwapi.dll library.
How severe is CVE-2012-0454?: CVE-2012-0454 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2012-0454 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0454?: CVE-2012-0454 primarily affects Mozilla Firefox. In total, 140 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0454?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2012-0454 published?: CVE-2012-0454 was published on 2012-03-14 and last updated on 2026-06-16.

References

Affected products (140)

cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta6:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta7:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta8:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0:beta9:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:8.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:10.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:10.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird_esr:10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird_esr:10.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird_esr:10.0.2:*:*:*:*:*:*:*

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